Sigma SD15 vs Sony A7 III

Here, we will be comparing the Sigma SD15 versus Sony A7 III, one is a Advanced DSLR and the latter is a Pro Mirrorless by companies Sigma and Sony. There exists a huge gap among the resolutions of the SD15 (5MP) and A7 III (24MP) and the SD15 (APS-C) and A7 III (Full frame) posses totally different sensor measurements.

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The SD15 was announced 9 years before the A7 III which is a fairly significant gap as far as camera technology is concerned. Both of these cameras feature different body design with the Sigma SD15 being a Mid-size SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before we go right into a complete comparison, here is a concise highlight of how the SD15 scores versus the A7 III with regard to portability, imaging, features and an overall mark.

Following is a preview of the gallery images for Sigma SD15 and Sony Alpha A7 III. The whole galleries are provided at Sigma SD15 Gallery and Sony A7 III Gallery.

For anyone who is planning to travel with your camera regularly, you have to factor its weight and volume. The Sigma SD15 has got external dimensions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") having a weight of 750 grams (1.65 lbs) and the Sony A7 III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 650 grams (1.43 lbs).

See the Sigma SD15 versus Sony A7 III in the new Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you use at that moment. The following is a front view measurement comparison of the SD15 and the A7 III.

Considering dimensions and weight, the portability rating of the SD15 and A7 III is 59 and 63 respectively.

Quite often, it is hard to visualise the gap in sensor dimensions just by looking through specs. The image here will provide you a stronger sense of the sensor sizes in the SD15 and A7 III.

As you can plainly see, both cameras come with different megapixel count and different sensor dimensions. The SD15 with its smaller sensor will make achieving bokeh trickier and the Sony A7 III will result in extra detail with its extra 19 Megapixels. Higher resolution will help you crop shots a good deal more aggressively. The more aged SD15 will be behind with regard to sensor innovation.